Current Electricity

Related Questions

• Dimensions of a block are $1\,cm \times 1\,cm \times 100\,cm$. If specific resistance of its material is $3 \times {10^{ - 7}}ohm - m$, then the resistance between the square faces is

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• When a resistor of $11 \Omega$ is connected in series with an electric cell, the current flowing in it is 0.5 A. Instead, when a resistor of $5 \Omega$ is connected to the same electric cell in series, the current increases by 0.4 A. The internal resistance of the cell is

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• The material of fuse wire should have

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• If each resistance in the figure is of $9 \Omega$ then reading of ammeter is

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